/*
 * Copyright (c) 2005, 2006, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
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 */
package javax.swing.plaf.nimbus;

import java.awt.*;
import java.awt.geom.*;
import java.awt.image.*;
import javax.swing.*;
import javax.swing.Painter;


final class FormattedTextFieldPainter extends AbstractRegionPainter {

  //package private integers representing the available states that
  //this painter will paint. These are used when creating a new instance
  //of FormattedTextFieldPainter to determine which region/state is being painted
  //by that instance.
  static final int BACKGROUND_DISABLED = 1;
  static final int BACKGROUND_ENABLED = 2;
  static final int BACKGROUND_SELECTED = 3;
  static final int BORDER_DISABLED = 4;
  static final int BORDER_FOCUSED = 5;
  static final int BORDER_ENABLED = 6;


  private int state; //refers to one of the static final ints above
  private PaintContext ctx;

  //the following 4 variables are reused during the painting code of the layers
  private Path2D path = new Path2D.Float();
  private Rectangle2D rect = new Rectangle2D.Float(0, 0, 0, 0);
  private RoundRectangle2D roundRect = new RoundRectangle2D.Float(0, 0, 0, 0, 0, 0);
  private Ellipse2D ellipse = new Ellipse2D.Float(0, 0, 0, 0);

  //All Colors used for painting are stored here. Ideally, only those colors being used
  //by a particular instance of FormattedTextFieldPainter would be created. For the moment at least,
  //however, all are created for each instance.
  private Color color1 = decodeColor("nimbusBlueGrey", -0.015872955f, -0.07995863f, 0.15294117f, 0);
  private Color color2 = decodeColor("nimbusLightBackground", 0.0f, 0.0f, 0.0f, 0);
  private Color color3 = decodeColor("nimbusBlueGrey", -0.006944418f, -0.07187897f, 0.06666666f, 0);
  private Color color4 = decodeColor("nimbusBlueGrey", 0.007936537f, -0.07826825f, 0.10588235f, 0);
  private Color color5 = decodeColor("nimbusBlueGrey", 0.007936537f, -0.07856284f, 0.11372548f, 0);
  private Color color6 = decodeColor("nimbusBlueGrey", 0.007936537f, -0.07796818f, 0.09803921f, 0);
  private Color color7 = decodeColor("nimbusBlueGrey", -0.027777791f, -0.0965403f, -0.18431371f, 0);
  private Color color8 = decodeColor("nimbusBlueGrey", 0.055555582f, -0.1048766f, -0.05098039f, 0);
  private Color color9 = decodeColor("nimbusLightBackground", 0.6666667f, 0.004901961f,
      -0.19999999f, 0);
  private Color color10 = decodeColor("nimbusBlueGrey", 0.055555582f, -0.10512091f, -0.019607842f,
      0);
  private Color color11 = decodeColor("nimbusBlueGrey", 0.055555582f, -0.105344966f, 0.011764705f,
      0);
  private Color color12 = decodeColor("nimbusFocus", 0.0f, 0.0f, 0.0f, 0);


  //Array of current component colors, updated in each paint call
  private Object[] componentColors;

  public FormattedTextFieldPainter(PaintContext ctx, int state) {
    super();
    this.state = state;
    this.ctx = ctx;
  }

  @Override
  protected void doPaint(Graphics2D g, JComponent c, int width, int height,
      Object[] extendedCacheKeys) {
    //populate componentColors array with colors calculated in getExtendedCacheKeys call
    componentColors = extendedCacheKeys;
    //generate this entire method. Each state/bg/fg/border combo that has
    //been painted gets its own KEY and paint method.
    switch (state) {
      case BACKGROUND_DISABLED:
        paintBackgroundDisabled(g);
        break;
      case BACKGROUND_ENABLED:
        paintBackgroundEnabled(g);
        break;
      case BACKGROUND_SELECTED:
        paintBackgroundSelected(g);
        break;
      case BORDER_DISABLED:
        paintBorderDisabled(g);
        break;
      case BORDER_FOCUSED:
        paintBorderFocused(g);
        break;
      case BORDER_ENABLED:
        paintBorderEnabled(g);
        break;

    }
  }

  protected Object[] getExtendedCacheKeys(JComponent c) {
    Object[] extendedCacheKeys = null;
    switch (state) {
      case BACKGROUND_ENABLED:
        extendedCacheKeys = new Object[]{
            getComponentColor(c, "background", color2, 0.0f, 0.0f, 0)};
        break;
      case BORDER_FOCUSED:
        extendedCacheKeys = new Object[]{
            getComponentColor(c, "background", color9, 0.004901961f, -0.19999999f, 0),
            getComponentColor(c, "background", color2, 0.0f, 0.0f, 0)};
        break;
      case BORDER_ENABLED:
        extendedCacheKeys = new Object[]{
            getComponentColor(c, "background", color9, 0.004901961f, -0.19999999f, 0),
            getComponentColor(c, "background", color2, 0.0f, 0.0f, 0)};
        break;
    }
    return extendedCacheKeys;
  }

  @Override
  protected final PaintContext getPaintContext() {
    return ctx;
  }

  private void paintBackgroundDisabled(Graphics2D g) {
    rect = decodeRect1();
    g.setPaint(color1);
    g.fill(rect);

  }

  private void paintBackgroundEnabled(Graphics2D g) {
    rect = decodeRect1();
    g.setPaint((Color) componentColors[0]);
    g.fill(rect);

  }

  private void paintBackgroundSelected(Graphics2D g) {
    rect = decodeRect1();
    g.setPaint(color2);
    g.fill(rect);

  }

  private void paintBorderDisabled(Graphics2D g) {
    rect = decodeRect2();
    g.setPaint(decodeGradient1(rect));
    g.fill(rect);
    rect = decodeRect3();
    g.setPaint(decodeGradient2(rect));
    g.fill(rect);
    rect = decodeRect4();
    g.setPaint(color6);
    g.fill(rect);
    rect = decodeRect5();
    g.setPaint(color4);
    g.fill(rect);
    rect = decodeRect6();
    g.setPaint(color4);
    g.fill(rect);

  }

  private void paintBorderFocused(Graphics2D g) {
    rect = decodeRect7();
    g.setPaint(decodeGradient3(rect));
    g.fill(rect);
    rect = decodeRect8();
    g.setPaint(decodeGradient4(rect));
    g.fill(rect);
    rect = decodeRect9();
    g.setPaint(color10);
    g.fill(rect);
    rect = decodeRect10();
    g.setPaint(color10);
    g.fill(rect);
    rect = decodeRect11();
    g.setPaint(color11);
    g.fill(rect);
    path = decodePath1();
    g.setPaint(color12);
    g.fill(path);

  }

  private void paintBorderEnabled(Graphics2D g) {
    rect = decodeRect7();
    g.setPaint(decodeGradient5(rect));
    g.fill(rect);
    rect = decodeRect8();
    g.setPaint(decodeGradient4(rect));
    g.fill(rect);
    rect = decodeRect9();
    g.setPaint(color10);
    g.fill(rect);
    rect = decodeRect10();
    g.setPaint(color10);
    g.fill(rect);
    rect = decodeRect11();
    g.setPaint(color11);
    g.fill(rect);

  }


  private Rectangle2D decodeRect1() {
    rect.setRect(decodeX(0.4f), //x
        decodeY(0.4f), //y
        decodeX(2.6f) - decodeX(0.4f), //width
        decodeY(2.6f) - decodeY(0.4f)); //height
    return rect;
  }

  private Rectangle2D decodeRect2() {
    rect.setRect(decodeX(0.6666667f), //x
        decodeY(0.4f), //y
        decodeX(2.3333333f) - decodeX(0.6666667f), //width
        decodeY(1.0f) - decodeY(0.4f)); //height
    return rect;
  }

  private Rectangle2D decodeRect3() {
    rect.setRect(decodeX(1.0f), //x
        decodeY(0.6f), //y
        decodeX(2.0f) - decodeX(1.0f), //width
        decodeY(1.0f) - decodeY(0.6f)); //height
    return rect;
  }

  private Rectangle2D decodeRect4() {
    rect.setRect(decodeX(0.6666667f), //x
        decodeY(1.0f), //y
        decodeX(1.0f) - decodeX(0.6666667f), //width
        decodeY(2.0f) - decodeY(1.0f)); //height
    return rect;
  }

  private Rectangle2D decodeRect5() {
    rect.setRect(decodeX(0.6666667f), //x
        decodeY(2.3333333f), //y
        decodeX(2.3333333f) - decodeX(0.6666667f), //width
        decodeY(2.0f) - decodeY(2.3333333f)); //height
    return rect;
  }

  private Rectangle2D decodeRect6() {
    rect.setRect(decodeX(2.0f), //x
        decodeY(1.0f), //y
        decodeX(2.3333333f) - decodeX(2.0f), //width
        decodeY(2.0f) - decodeY(1.0f)); //height
    return rect;
  }

  private Rectangle2D decodeRect7() {
    rect.setRect(decodeX(0.4f), //x
        decodeY(0.4f), //y
        decodeX(2.6f) - decodeX(0.4f), //width
        decodeY(1.0f) - decodeY(0.4f)); //height
    return rect;
  }

  private Rectangle2D decodeRect8() {
    rect.setRect(decodeX(0.6f), //x
        decodeY(0.6f), //y
        decodeX(2.4f) - decodeX(0.6f), //width
        decodeY(1.0f) - decodeY(0.6f)); //height
    return rect;
  }

  private Rectangle2D decodeRect9() {
    rect.setRect(decodeX(0.4f), //x
        decodeY(1.0f), //y
        decodeX(0.6f) - decodeX(0.4f), //width
        decodeY(2.6f) - decodeY(1.0f)); //height
    return rect;
  }

  private Rectangle2D decodeRect10() {
    rect.setRect(decodeX(2.4f), //x
        decodeY(1.0f), //y
        decodeX(2.6f) - decodeX(2.4f), //width
        decodeY(2.6f) - decodeY(1.0f)); //height
    return rect;
  }

  private Rectangle2D decodeRect11() {
    rect.setRect(decodeX(0.6f), //x
        decodeY(2.4f), //y
        decodeX(2.4f) - decodeX(0.6f), //width
        decodeY(2.6f) - decodeY(2.4f)); //height
    return rect;
  }

  private Path2D decodePath1() {
    path.reset();
    path.moveTo(decodeX(0.4f), decodeY(0.4f));
    path.lineTo(decodeX(0.4f), decodeY(2.6f));
    path.lineTo(decodeX(2.6f), decodeY(2.6f));
    path.lineTo(decodeX(2.6f), decodeY(0.4f));
    path.curveTo(decodeAnchorX(2.5999999046325684f, 0.0f), decodeAnchorY(0.4000000059604645f, 0.0f),
        decodeAnchorX(2.880000352859497f, 0.09999999999999432f),
        decodeAnchorY(0.4000000059604645f, 0.0f), decodeX(2.8800004f), decodeY(0.4f));
    path.curveTo(decodeAnchorX(2.880000352859497f, 0.09999999999999432f),
        decodeAnchorY(0.4000000059604645f, 0.0f), decodeAnchorX(2.880000352859497f, 0.0f),
        decodeAnchorY(2.879999876022339f, 0.0f), decodeX(2.8800004f), decodeY(2.8799999f));
    path.lineTo(decodeX(0.120000005f), decodeY(2.8799999f));
    path.lineTo(decodeX(0.120000005f), decodeY(0.120000005f));
    path.lineTo(decodeX(2.8800004f), decodeY(0.120000005f));
    path.lineTo(decodeX(2.8800004f), decodeY(0.4f));
    path.lineTo(decodeX(0.4f), decodeY(0.4f));
    path.closePath();
    return path;
  }


  private Paint decodeGradient1(Shape s) {
    Rectangle2D bounds = s.getBounds2D();
    float x = (float) bounds.getX();
    float y = (float) bounds.getY();
    float w = (float) bounds.getWidth();
    float h = (float) bounds.getHeight();
    return decodeGradient((0.5f * w) + x, (0.0f * h) + y, (0.5f * w) + x, (1.0f * h) + y,
        new float[]{0.0f, 0.5f, 1.0f},
        new Color[]{color3,
            decodeColor(color3, color4, 0.5f),
            color4});
  }

  private Paint decodeGradient2(Shape s) {
    Rectangle2D bounds = s.getBounds2D();
    float x = (float) bounds.getX();
    float y = (float) bounds.getY();
    float w = (float) bounds.getWidth();
    float h = (float) bounds.getHeight();
    return decodeGradient((0.5f * w) + x, (0.0f * h) + y, (0.5f * w) + x, (1.0f * h) + y,
        new float[]{0.0f, 0.5f, 1.0f},
        new Color[]{color5,
            decodeColor(color5, color1, 0.5f),
            color1});
  }

  private Paint decodeGradient3(Shape s) {
    Rectangle2D bounds = s.getBounds2D();
    float x = (float) bounds.getX();
    float y = (float) bounds.getY();
    float w = (float) bounds.getWidth();
    float h = (float) bounds.getHeight();
    return decodeGradient((0.25f * w) + x, (0.0f * h) + y, (0.25f * w) + x, (0.1625f * h) + y,
        new float[]{0.1f, 0.49999997f, 0.9f},
        new Color[]{color7,
            decodeColor(color7, color8, 0.5f),
            color8});
  }

  private Paint decodeGradient4(Shape s) {
    Rectangle2D bounds = s.getBounds2D();
    float x = (float) bounds.getX();
    float y = (float) bounds.getY();
    float w = (float) bounds.getWidth();
    float h = (float) bounds.getHeight();
    return decodeGradient((0.5f * w) + x, (0.0f * h) + y, (0.5f * w) + x, (1.0f * h) + y,
        new float[]{0.1f, 0.49999997f, 0.9f},
        new Color[]{(Color) componentColors[0],
            decodeColor((Color) componentColors[0], (Color) componentColors[1], 0.5f),
            (Color) componentColors[1]});
  }

  private Paint decodeGradient5(Shape s) {
    Rectangle2D bounds = s.getBounds2D();
    float x = (float) bounds.getX();
    float y = (float) bounds.getY();
    float w = (float) bounds.getWidth();
    float h = (float) bounds.getHeight();
    return decodeGradient((0.5f * w) + x, (0.0f * h) + y, (0.5f * w) + x, (1.0f * h) + y,
        new float[]{0.1f, 0.49999997f, 0.9f},
        new Color[]{color7,
            decodeColor(color7, color8, 0.5f),
            color8});
  }


}
